Wider Roller for the Even SHORTER Filler Filament Spool System

Jonathan Levi's design was perfect for an enclosure I'm building, but Overture spools didn't quite fit on it. I changed the roller design, so an Overture spool fits on the same Even SHORTER Filler Filament Spool System base.

Changes:

- Added a couple mm of length to get more room and give it a more secure fit in the base - Made the notches that add space between the bearings smaller - Moved the bevel that keeps the spool centered to the middle of the roller, so the entire width is usable I included files for the full roller and ½ the roller. I printed 2 copies of the half and glued them together.